Forget Hydrogen, you’re my number one element ;)

Answer: No

Explanation: We can not call all iconic compounds covalent.

Answer:

an iconic bond is formed by the complete transfer of some electrons from one atom to another

Explanation:

the atom losing one or more electrons become a cation. a positively charged ion the atom gaining one or more electrons become an anion. a negatively charged ion

Answer:

Molarity can be used to calculate the volume of solvent or the amount of solute. The relationship between two solutions with the same amount of moles of solute can be represented by the formula c1V1 = c2V2, where c is concentration and V is volume.

The relationship between Molarity and volume of a solution is : ( B ) They are inversely related

Molarity is the number of moles of solute in unit of volume of the solution ( usually per liter ). Molarity is calculated by dividing the number of moles of a solute ( n ) by the volume of the solution.

Molarity = n / v .

Therefore we can conclude that the relationship between Molarity and volume is that they are inversely related.

Learn more about Molarity : https://brainly.com/question/17138838

QUESTION

WHY DOES TEMPERATURE REMAIN CONSTANT DURING CHANGE OF STATE

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[tex]\orange{\underline{\huge{\bold{\textit{\green{\bf{REASON}}}}}}}[/tex]

The energy in the form of heat which is supplied to the body is used in the breaking of the bonds to change its State. when changing from low energy state to high energy state

The energy in the form of heat which is released out is released when bonds r formed to change the state . when changing from high energy state to low energy state.

so net change in temperature is zero bez the heat received and released is always used.

Answer:

4. C2H4, C3H6, C4H8

this is the alkane homologous series of hydrocarbons.

Their general formula is CnH2n

you can check this fits for all these compounds

put n = 1, 2, 3 and so on

Answer:

9 atoms

Explanation:

Ca=1

Cl=2

O=6

add them all

answer

cl atom is 2

ca atom is 1

o atom is 6

mmmmmmmmmmhhhhhhhhhhhhhhhhhhhh

Answer:

0.111

Explanation:

Step 1: Calculate the moles corresponding to 23.2 g of ethanol

The molar mass of C₂H₅OH is 46 g/mol.

23.2 g × 1 mol/46 g = 0.504 mol

Step 2: Calculate the moles corresponding to 73.1 g of water

The molar mass of H₂O is 18 g/mol.

73.1 g × 1 mol/18 g = 4.06 mol

Step 3: Calculate the total number of moles

n = nC₂H₅OH + nH₂O = 0.504 mol + 4.06 mol = 4.56 mol

Step 4: Calculate the mole fraction of ethanol

We will use the following expression.

Χ(C₂H₅OH) = nC₂H₅OH / n

Χ(C₂H₅OH) = 0.504 mol / 4.56 mol = 0.111

Answer:

Zinc

Zinc blende

(ZnS)

-----------------

Lead

Galena

(PbS)

-----------------

Mercury

Cinnabar

(HgS)

----------------

Copper

Copper glance

(Cu2S)

-------------------

Explanation:

Had to learn this for a test

Also, I plead the 5th

Answer:high pressure system and cold fronts

Explanation:

High pressure develops in areas where air cools and sinks. This usually causes fair weather with cool temperatures and few clouds.

Cold fronts occur when warm air is pushed up into the atmosphere by colder air at the ground. These fronts tend to move faster than the other types of fronts and are associated with the most violent types of weather such as severe and super cell thunderstorms, although any type of front can produce these same storms. After a cold front passes it is common to have clear skies and a dramatic change in wind direction on top of the cooler air associated with the front itself.

Answer:

This relates to Boyle's Law.

Pressure is inversely related to Volume

Its is an Indirect Relationship. When One increases....The other decreases.

OPTION B IS YOUR ANSWER.

HAVE A GREAT DAY!

Answer:

2HNO3 (aq) + Na2CO3 (aq) → 2NaNO3 (aq) + CO2 (g) + H2O (l)

Explanation:

This question is asking to write and balance an equation between between aqueous sodium carbonate (Na2CO3) and aqueous nitric acid (HNO3). The equation is as follows:

HNO3 (aq) + Na2CO3 (aq) → NaNO3 (aq) + CO2 (g) + H2O (l)

However, this equation is not balanced as the number of atoms of each element must be the same on both sides of the equation. To balance the equation, one will make use of coefficients as follows:

2HNO3 (aq) + Na2CO3 (aq) → 2NaNO3 (aq) + CO2 (g) + H2O (l)

the answer is 2 and 4 earth's atmosphere containing oxygen and nitrogen is essential for life and the surface temperature is also essential

Answer:

1. physical property

2. chemical property

3. physical change

hope this helps

Answer:

D)subscript of C in molecular formula = n x subscript of C in empirical formula

Explanation:

THIS IS THE COMPLETE QUESTION BELOW;

.The empirical formula for a compound is CH2. If n is a whole number, which shows a correct relationship between the molecular formula and the empirical formula? a)<br /><br /> empirical formula mass / molecular mass = n<br /><br /> B) molecular mass = element mass / empirical formula mass ´ 100<br /><br /> c) subscript of H in empirical formula = 2  subscript of H in molecular formula<br /><br /> D) subscript of C in molecular formula = n  subscript of C in empirical formula<br /><br />

An empirical formula can be regarded as "shorten form" of a molecular formula. Instance of this is

A compounds CH4, C2H8, C4H12... with empirical formula of CH4. In this case a constant "n" represent the difference that exist between empirical formula and molecular formula, "n" which is a whole number, molecular formula is the numerator.

Therefore, subscript of C in molecular formula = n x subscript of C in empirical formula

Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 10 × 5

We have the final answer as

Hope this helps you

Answer:

For sugar: Studies have shown that (when someone stops eating sugar) there are similar effects as when people get off drugs," she said. "You may experience exhaustion, headaches, brain fog and irritability. Some people even have gastrointestinal distress.

For water: Any deficit in normal body water through dehydration, sickness, exercise or heat stress can make us feel rotten. First we feel thirsty and fatigued, and may develop a mild headache. This eventually gives way to grumpiness, and mental and physical decline

I'm not sure if this is the answer you're looking for ✌

Explanation:

Answer:

the correct answer to it will be

2. They are isomers of butanol

as In the first case the the position of the alcoholic group is in the 1st carbon atom of butane and in the second its located at the 2nd carbon atom of butane.

so the compound is same with same chemical formula but since the postion of alcoholic group is different in both they become each other's isomers.

Answer: The mass of manganese(III) oxide produced is 113.03 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of zinc = 46.8 g

Molar mass of zinc = 65.38 g/mol

Plugging values in equation 1:

[tex]\text{Moles of zinc}=\frac{46.8g}{65.38g/mol}=0.716 mol[/tex]

The given chemical equation follows:

[tex]Zn+2MnO_2+H_2O\rightarrow Zn(OH)_2+Mn_2O_3[/tex]

By the stoichiometry of the reaction:

If 1 mole of zinc produces 1 mole of manganese(III) oxide

So, 0.716 moles of zinc will produce = [tex]\frac{1}{1}\times 0.716=0.716mol[/tex] of manganese(III) oxide

Molar mass of manganese(III) oxide = 157.87 g/mol

Plugging values in equation 1:

[tex]\text{Mass of manganese(III) oxide}=(0.716mol\times 157.87g/mol)=113.03g[/tex]

Hence, the mass of manganese(III) oxide produced is 113.03 g

Answer:

(a): The balloon will contain [tex]\frac{X}{2}[/tex] number of molecules now.

(b): The gas law associated with this is Avogadro's law.

Explanation:

Avogadro's law states that the volume of the gas is directly proportional to the number of moles of the gas at constant pressure and temperature

Mathematically,

[tex]V\propto n[/tex]                   (At constant pressure and temperature)

OR

[tex]\frac{V_1}{n_1}=\frac{V_2}{n_2}[/tex]               .....(1)

where,

[tex]V_1\text{ and }n_1[/tex] = Initial volume and number of moles

[tex]V_2\text{ and }n_2[/tex] = Final volume and number of moles

We are given:

[tex]V_2=\frac{V_1}{2}[/tex]

Putting values in equation 1, we get:

[tex]\frac{V_1}{n_1}=\frac{V_1}{2\times n_2}\\\\n_2=\frac{n_1}{2}[/tex]

(a):

If [tex]n_1[/tex] number of moles of gas contains X number of molecules

So, [tex]\frac{n_1}{2}[/tex] number of moles of gas will contain = [tex]\frac{X}{n_1}\times {n_1}{2}=\frac{X}{2}[/tex] number of molecules

Hence, the balloon will contain [tex]\frac{X}{2}[/tex] number of molecules now.

(b): The law used is Avogadro's law.

Answer: Van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Explanation:

Strong electrolytes are defined as the solutions which completely dissociate into their ions.

But, most of the strong electrolytes do not dissociate completely (act ideally) but remain partially undissociated into the ions. Thus, giving a lesser number of ions in the solution than expected.

This means that the Van't Hoff factor, i which denotes the number of ions is less than expected.

As fewer ions are released in the solution, the concentration of the solution is expected to decrease.

Hence, van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Answer:

2:3

Explanation:

The compound whose chemical formula is given in the question is called Aluminium oxide. It is structurally made up of two atoms of aluminum (Al) and three atoms of oxygen (O).

Based on the above, the atomic ratio of aluminum to oxygen can be calculated as 2:3 i.e. 2 atoms of aluminum to 3 atoms of oxygen.

The ratio of Aluminum to oxygen in the aluminum oxide has been 2:3.

The chemical formula has been the chemical representation that gives the presence of the atoms of elements in the compound.

The chemical formula has been written with the chemical symbol of the elements and the subscript represents the atoms of each element present in the compound.

The given formula is Aluminum oxide. The representation has consisted of the Al as the symbol of Aluminum, and O as the symbol of oxygen.

The subscript represents the number of atoms of each element that are contributed to the molecule. The number of atoms of Al has been 2, while the number of atoms of oxygen has been 3.

The ratio of aluminum to oxygen has been given as:

[tex]\rm \dfrac{Al}{O}\;=\;\dfrac{2}{3}[/tex]

Al:O = 2:3.

The ratio of Aluminum to oxygen in the aluminum oxide has been 2:3.

For more information about the ratio of elements in a molecule, refer to the link:

https://brainly.com/question/14346965

Answer:

2.5g/ mll

Explanation:

d=m/v

Answer: The correct option is A) 0.068 m

Explanation:

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molarity:

[tex]\text{Molality of solution}=\frac{\text{Given mass of solute}}{\text{Molar mass of solute}\times \text{Mass of solvent (in kg)}}[/tex] .....(1)

We are given:

Given mass of NaCl = 120 g

Molar mass of NaCl = 58.45 g/mol

Mass of solvent = 30 kg

Putting values in equation 1, we get:

[tex]\text{Molality of NaCl}=\frac{120}{58.44\times 30}\\\\\text{Molality of NaCl}=0.068m[/tex]

Hence, the correct option is A) 0.068 m

Answer:

Yup, I believe so.

Explanation: